Tool



June 11, 1940.

E. H. FAWLEY 2,204,303

TOOL

Filed Oct. 15. 1938 10 ceiving a coupling member.

Patented June 11, 1940 uNITEofsrATEs PATENT OFFICE j 2,204,303 p p v root I Elmer? H.--Fawley, Decatur, 111., assignor to :rMueller 00., Decatur, Ill.,,a I corporation of ,1 Illinois z fApplication Octo ber15, 1938,;Serial'No.235,248 '4 Claims. (Cl. ,81'-53) to insert such a stop in a main,'it has been the usual practice heretofore to thread a socketed 15 tool on the outlet nipple, the two parts assuming a jammed relation upon rotation of .thetool in the threading directionfso that the other nipple may be threaded into the -main. Due to the jamming of the nipple in the socket "of thetool, 20' it frequently happens that thestop will follow the tool when it isattempted to remove the latter by reverse rotation. Furthermorejthe coupling nipple is sometimes damaged during the operation. It is a purposeoi the present invention to 25 provide a tool which, while securely connected to the stop through the coupling nipple, does not rely on the latter'for the transmission of torque, but positively engages the body of the stop so that rotation of the tool is directly transmitted to the 30 stop body independently oi the coupling nipple. The invention will, be described with reference.

in the-accompanying drawing. In the drawing:

to an illustrative embodimentof the tool as shown 35 Figure 1 shows a stopin elevation, a portion of amain in transverse section, and the'new tool in axial section.

Figure 2 is likeFigure 1, but shows the parts of the tool in a different relation.

40 Figure 3 is anelevation of the ,stopand tool of Figures 1 and 2 as seen from a direction at right angles to the section plane, of Figure 1,-and I Figure 4 is a section substantially on line 4 4 of Figure Z.

I 5; Referring to thedrawing, reference numeralsi l and H generally designate the stoplari d tool respectively. Thestop comprises a body portion l2 which-houses a plug I3, and as here shown, has opposite parallel side walls I4 and I parallel 50 to the axis oftheplug. The plug body has at one end a nipple I6 shown in Figures 1 and 2 as threaded in an opening in a main I1, and anipple l8 which is the coupling nipple and which isv en-,

gaged by the tool during the inserting or removal 55 operation for the purpose of holding the tool and.

stop together. "At the base of nipple I8 is a shoulder 1 [9, which, as here shown, is substantially square in plan. 7 g

v The tool I I comprises a shank portion 20 which is designed .for engagement in the usual manner 5 in the socket of a boring bar. At one end of the shank portion, and here shown as integral therewith, is a cylindrical head portion 2| which is provided with a cylindricalsocket 22 coaxial with the shank portion. As here shown, the head portionincludes diametrically opposite jaw portions 23 and 24 which project to an equal extent in the opposite direction from the. shank portion and 3 have opposed parallel faces spaced apart a distance slightly greater than that separating the side walls [4 and 15 of the stop body. The head portion is provided with parallel diametrically opposite faxially extending slots 25 and 26 which extendintothe jaw portions 23 and. 24. The jaw portions are provided with diametrically opposite circumferentially extendinggrooves 28 and 29 and the wall of socket 22 has :a circumferential groove 30. 1

Reciprocable in the head portion is an annular member 3! which has a threaded bore coaxial 26 with shank portion 20 anddesigned for engagement with nipple l8. Atdiametrically opposite points pairs of studs 32 and 33 are threaded into member 3| and project into slots and 26 re-' spectively. Intermediate the pairs of studs mem- .80 her 3| is provided with an annular groove which receives an annular split wire 34 of spring metal which has an expansive action. When member 3| is in the position of Figure 1, where it is in the socket'portion of the head, spring 34 engages in 85 groove so that the member 3| is yieldingly maintained in its inner limit of reciprocation. Member 31 is yieldingly maintained in its outer limit of reciprocation through engagement of spring 34in the grooves 28 and 29. Studs 32 and 40 33 assistin guiding member 3| rectilinearly between its limitsof reciprocation and also prevent relative rotation of member 3| and headportion 2|, rotation of the tool being thus positively impartableto the stop. Also, the outer studs 32 and 33, through'cooperation with the outer end walls of grooves '25 and 2B, positively limit outward movement of the member 3| r'e1ative to the head portion. Inward movement of member 3| relative to the head portion may be positively limited by the inner studs 32 and 33- or by abutment of the memberwiththe socket end wall.

Figure 1 shows'the parts of the tool in the relation assumed when the tool is operatively engaged with the stop for either insertion or rev moval. In this relation of parts member 3| is preferably entirely within the socket 22, and jaws 23 and 2d overlie faces 14 and I5 of the stop body and are adapted to engage the same to positively transmit rotation of the tool to the stop in either direction. Assuming that in Figure 1 the stop has just been threaded home and that it is desired to remove the tool, a pull is given to the shank 20 in a direction away from the stop so that spring 34 is forced out of groove 30 and the head moves relative to member 3| to the position shown in Figure 2 wherein spring 34 is engaged in grooves 28 and 29. The outer ends of the jaws are now substantially flush with the outer face of member 3|. The jaws 23 and 24 are now in a position wherein they clear the faces of the stop body upon reverse rotation of the tool.

In initially applying the tool, its parts are in the relation shown in Figure 2. Member 3| is threaded on nipple 18 preferably to a relation wherein it is just free of abutment with shoulder 59 and with jaws 23 and 2:3 in such position that upon pushing the head portion of the tool toward the stop, the jaws will come to the operative position shown in Figures 1 and 3. The manner of application of the tool to the stop is the same whether the stop is to be inserted or removed, since rotation of the applied tool, Figures 1 and 3, is impartable to the stop in either direction.

It will be understood that the stop body need not have exactly the form shown and that the same applies to the jaw portions. It is only necessary that these parts be so formed that when the jaws are in the position of Figures 1 and 3, they will cooperate with some part or parts of the stop body so that rotation of the tool is positively transmittable to the stop Without jamming of nipple H3 in member 3i. Various changes in the form and relation of parts are possible without departure from the invention as defined in, the following claims.

I claim:

1. A tool of the class described comprising a shank portion and a head portion at one end of said shank portion having a socket therein coaxial with said shank portion, said head portion including circumferentially spaced jaw portions projecting in the opposite direction from said shank portion and adapted to engage a body tobe turned, said head portion having parallel axially extending slots extending into said jaw portions, a member axially reciprocable in said socket and along said jaw portions, said member having a threaded bore coaxial with said shank portion, and projecting means on said member engaged in said slots and cooperating with the latter to rectilinearly guide said member and to prevent relative rotation of said member and said head portion.

2. A tool of the class'described, comprising a shank portion engageable with a boring bar, a radially expanded head portion at one end of said shank portion having a socket therein 00- axial with said shank portion, the side walls of said head portion at the end of said socket remote from said shank portion being constituted as jaw portions, a member axially reciprocable in said socket and along said jaw portions between limit positions, said member having a threaded bore coaxial with said shank portion, and means engaging said member with said jaw portions for preventing relative rotation when said member is within said jaw portions, said member when in the last-mentioned position being threadable on a nipple of a corporation stop or the like up to less than a jamming relation and without interference of said jaw portions upon turning said shank portion in threading direction, said shank and head portions being then movable relative to said member and stop to engage said jaw portions with the stop body so that further rotation of the tool will be imparted to the stop body by said jaw portions without jamming of said member and said nipple.

3. A tool of the class described comprising a shank portion engageable with a boring bar, a radially expanded head portion at one end of said shank portion having a socket therein coaxial with' said shank portion, the side Walls of said head portion at the end of said socket remote from said shank portion, being constituted as jaw portions, a member axially reciprocable in said socket and along said jaw portions between limit positions, means for" yieldingly retaining said member in its inner limit position, said member having a threaded bore coaxial with said shank portion, and means engaging said member with said jaw portions for preventing relative rotation when said member is within said jaw portions, said member when in the last-mentioned position being threadable on a nipple of a corporation stop or the like up to less than a jamming relation and without interference of said jaw portions upon turning said shank portion in threading direction, said shank and head portions being then movable relative to said member and stop to engage said jaw portions with the stop body so that further rotation of the tool will be imparted to the stop body by said jaw portions without jamming of said member and said nipple.

4. A tool of the class described, comprising a shank portion engageable with a boring bar, a radially expanded head portion at one end of said shank portion, having a socket therein coaxial with said shank portion, the said head portion including circumferentially'spaced jaw portions projecting in the opposite direction from said shank portion and adapted to engage a body to be turned, a member axially reciprocable in said socket and along said jaw portions between limit positions, said member having a threaded bore coaxial with said shank portion, and means engaging said member with said jaw portions for preventing relative rotation when said member is within said jaw portions, said member when in the last-mentioned position being threadable on a nipple of a corporation stop or the like up to less than a jamming relation and without interference of said jaw portions upon turning said shank portion in threading direction, said shank and head portions being then movable relative to said member and stop to engage said jaw portions with the stop body so that further rotation of the tool will be imparted to the stop body by said jaw portions without jamming of said member and said nipple. v

ELMER H FAWLEY. 

